001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.hadoop.hbase.mapreduce; 019 020import edu.umd.cs.findbugs.annotations.Nullable; 021import java.io.IOException; 022import java.util.Collection; 023import java.util.List; 024import java.util.Map; 025import org.apache.hadoop.fs.Path; 026import org.apache.hadoop.hbase.HBaseClassTestRule; 027import org.apache.hadoop.hbase.TableName; 028import org.apache.hadoop.hbase.client.Scan; 029import org.apache.hadoop.hbase.io.ImmutableBytesWritable; 030import org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils; 031import org.apache.hadoop.hbase.testclassification.LargeTests; 032import org.apache.hadoop.hbase.testclassification.VerySlowMapReduceTests; 033import org.apache.hadoop.hbase.util.Bytes; 034import org.apache.hadoop.hbase.util.FSUtils; 035import org.apache.hadoop.mapreduce.Job; 036import org.junit.Before; 037import org.junit.BeforeClass; 038import org.junit.ClassRule; 039import org.junit.experimental.categories.Category; 040 041import org.apache.hbase.thirdparty.com.google.common.base.Function; 042import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableList; 043import org.apache.hbase.thirdparty.com.google.common.collect.Multimaps; 044 045@Category({ VerySlowMapReduceTests.class, LargeTests.class }) 046public class TestMultiTableSnapshotInputFormat extends MultiTableInputFormatTestBase { 047 048 @ClassRule 049 public static final HBaseClassTestRule CLASS_RULE = 050 HBaseClassTestRule.forClass(TestMultiTableSnapshotInputFormat.class); 051 052 protected Path restoreDir; 053 054 @BeforeClass 055 public static void setUpSnapshots() throws Exception { 056 057 TEST_UTIL.enableDebug(MultiTableSnapshotInputFormat.class); 058 TEST_UTIL.enableDebug(MultiTableSnapshotInputFormatImpl.class); 059 060 // take a snapshot of every table we have. 061 for (String tableName : TABLES) { 062 SnapshotTestingUtils 063 .createSnapshotAndValidate(TEST_UTIL.getAdmin(), TableName.valueOf(tableName), 064 ImmutableList.of(INPUT_FAMILY), null, 065 snapshotNameForTable(tableName), FSUtils.getRootDir(TEST_UTIL.getConfiguration()), 066 TEST_UTIL.getTestFileSystem(), true); 067 } 068 } 069 070 @Before 071 public void setUp() throws Exception { 072 this.restoreDir = TEST_UTIL.getRandomDir(); 073 } 074 075 @Override 076 protected void initJob(List<Scan> scans, Job job) throws IOException { 077 TableMapReduceUtil 078 .initMultiTableSnapshotMapperJob(getSnapshotScanMapping(scans), ScanMapper.class, 079 ImmutableBytesWritable.class, ImmutableBytesWritable.class, job, true, restoreDir); 080 } 081 082 protected Map<String, Collection<Scan>> getSnapshotScanMapping(final List<Scan> scans) { 083 return Multimaps.index(scans, new Function<Scan, String>() { 084 @Nullable 085 @Override 086 public String apply(Scan input) { 087 return snapshotNameForTable( 088 Bytes.toStringBinary(input.getAttribute(Scan.SCAN_ATTRIBUTES_TABLE_NAME))); 089 } 090 }).asMap(); 091 } 092 093 public static String snapshotNameForTable(String tableName) { 094 return tableName + "_snapshot"; 095 } 096 097}